6533b855fe1ef96bd12afed0
RESEARCH PRODUCT
A comparative thermogravimetric study of waterlogged archaeological and sound woods
Stefana MiliotoGiuseppe LazzaraDorina Ines DonatoGiuseppe Cavallarosubject
Thermal analysis Cultural heritage SEM Waterlogged archaeological wood Sound wood Activation energyThermogravimetric analysisgeographygeography.geographical_feature_categorybiologyChemistryMineralogyCondensed Matter Physicsbiology.organism_classificationArchaeologyFagus sylvaticaPinus pinasterSurface structureInorganic materialsPhysical and Theoretical ChemistryDegradation processWater contentSound (geography)description
Waterlogged archaeological woods Pinus pinaster and Fagus sylvatica L. were analyzed by using TG technique. Degradation processes ascribable to the holocellulose decay were evidenced at nearly the same temperature for sound and archaeological samples. The residual matters at 600 and 900 °C of the sound woods are much lower than those of archaeological waterlogged woods in agreement with the presence of inorganic materials encapsulated during the burial into the marine environment. It was proposed a new protocol to rapidly calculate the maximum water content parameter, which is related to the wood degradation state. TG experiments at variable heating rates were performed to obtain kinetic parameters for the degradation process. The Flynn–Wall–Ozawa and Friedman approaches allowed us to calculate the activation energy, which is significantly different for the sound and the archaeological woods.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-12-17 |